Juha Sarkkula

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The effects of nutrient load reductions on the biomass of N-fixing cyanobacteria were evaluated in the scale of the Gulf of Finland. The two analysed reduction scenarios were Finnish national agenda and the improvement of phosphorus removal in the present purification plants of St. Petersburg. The effects of load reduction scenarios were tested by using a(More)
The Tonle Sap Lake in Cambodia is a dynamic flood-pulsed ecosystem that annually increases its surface area from roughly 2,500 km(2) to over 12,500 km(2) driven by seasonal flooding from the Mekong River. This flooding is thought to structure many of the critical ecological processes, including aquatic primary and secondary productivity. The lake also has a(More)
[1] Hydraulic erosion of bank toe materials is the dominant factor controlling the long‐term rate of riverbank retreat. In principle, hydraulic bank erosion can be quantified using an excess shear stress model, but difficulties in estimating input parameters seriously inhibit the predictive accuracy of this approach. Herein a combination of analytical(More)
EXTENDED ABSTRACT Integrated Basin Flow Management (IBFM) approach has been proposed by Mekong River Commission (MRC) to balance the economic and social developments, and maintenance of productive, healthy ecosystems in the Mekong Basin. The IBFM approach needs analytical tools to be used in solving real management problems. Mathematical models, in this(More)
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